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Gregg, Jeff	1
Perham, Arnold E.	1
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Perham, Faustine L.	1

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The Perils of Conditional Statements and the Notion of Logical Equivalence.

Peer reviewed

Gregg, Jeff – Mathematics Teacher, 1997

Describes an episode involving conditional statements and the notion of logical equivalence that occurred in a 10th-grade college-preparatory geometry class. Illustrates some of the confusion that can arise in connection with this topic, for both students and teachers. (ASK)

Descriptors: Geometry, Grade 10, Mathematical Concepts, Mathematical Logic

Creating a Learning Environment for Geometric Reasoning.

Peer reviewed

Perham, Arnold E.; Perham, Bernadette H.; Perham, Faustine L. – Mathematics Teacher, 1997

Describes how students in a 10th-grade geometry class discovered relationships that led to the development of conjectures, theorems, and directions of proofs regarding the centroid of a triangle. (ASK)

Descriptors: Calculators, Computer Software, Educational Technology, Geometric Concepts